<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In this paper, simple algorithms for fast measurement and estimation of the unknown changing frequency, amplitude, and phase difference of the sinusoidal signals from two channels with the same frequency, as well as other parameters for evaluation of the power quality disturbances, are presented. Parameters are calculated from the DFT coefficients around the component peaks. The improvement for reducing the influences of the harmonic components is the estimation with the three-point interpolation and the Hann window.</p></abstract>

In this paper, simple algorithms for fast measurement and estimation of the unknown changing frequency, amplitude, and phase difference of the sinusoidal signals from two channels with the same frequency, as well as other parameters for evaluation of the power quality disturbances, are presented. Parameters are calculated from the DFT coefficients around the component peaks. The improvement for reducing the influences of the harmonic components is the estimation with the three-point interpolation and the Hann window.

Estimation and Tracking of the Power Quality Disturbances in the Frequency Domain

Faculty of Electrical Engineering, University of Ljubljana, Trzaska 25, 1001 Ljubljana, Slovenia

Measurement Science Review

In this paper, simple algorithms for fast measurement and estimation of the unknown changing frequency, amplitude, and phase difference of the sinusoidal...

Estimation and Tracking of the Power Quality Disturbances in the Frequency Domain

Published Online: Jan 20, 2011

Page range: 189 - 194

DOI: https://doi.org/10.2478/v10048-010-0032-4

Keywords
Power quality, voltage quality, disturbance estimation, frequency domain, non-coherency

This content is open access.

Estimation and Tracking of the Power Quality Disturbances in the Frequency Domain

Published Online: Jan 20, 2011

Page range: 189 - 194

DOI: https://doi.org/10.2478/v10048-010-0032-4

KeywordsPower quality, voltage quality, disturbance estimation, frequency domain, non-coherency

This content is open access.

Keywords
Power quality, voltage quality, disturbance estimation, frequency domain, non-coherency